Putter head



FIG. 1 is a top plan view of a putter head;

FIG. 2 is a front plan view thereof;

FIG. 3 is a toe plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a rear plan view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a putter head, as shown and described. 